Engine Stall

[woody]

Hello Forum Members,

Been awhile since my last post. I guess that's a good thing. Over the last couple of months I have had about 5 times where sitting at a light and the car stalls. Thank little baby Jesus that she started . The only codes are P1599 and P0300. Doesn't tell me much. I just had the wires replaced a week ago and it did happen one time after that. Not sure were to go from here.

Any suggestions or direction is always appreciated

Woody

1997 Seville STS

[BodybyFisher]

You are getting a misfire, you need to track that down (the P0300)

Check your plugs

Are these the codes you are getting AFTER you changed your ignition wires?

Are you getting a rough idle?

Check your coils also

[Cadillac Jim]

If the spark plugs have over 60,000 miles on them, you might consider new spark plugs. Be sure and get AC/Delco. Here's a link from NAPA:

NAPA page on AC/Delco plugs for 1997 Cadillac

[woody]

The spark plugs only have approx 30,000 miles on them. I had one stall after the wire install and approx 4 before the wires. The idle is smooth no hesatation. What should I check on the coils?

[adallak]

Is not a stall at a light a classic symptom of bad crankshaft position sensors?

[BodybyFisher]

Have you cleaned your IAC valve and throttle body?

Check your fuel pressure also

[woody]

Mike,

The throttle body was cleaned when I had the head gasket changed at 128,000 mile is was clogged like a bad heart artery. What is the IAC valve sorry? I am going to see my mechanic on Thusday to replace my heater hose I can have him take a look.

Thanks

[woody]

IAC Idle Air Control

I found a good post

http://www.cadillacforums.com/forums/cadillac-tech-tips/167181-tb-iac-idle-air-control-valve.html

[BodybyFisher]

IAC Idle Air Control

I found a good post

http://www.cadillacf...trol-valve.html

Yes, that is a good post. I love his engine how clean it is..wow....

Try cleaning your IAC, use the correct tool to remove the two screws, I forget what they are, I think T15.

check your fuel pressure also, keep in mind you are getting a misfire, not good, given your plugs and wires are new, look at spark, injectors, vacuum leak and fuel pressure

[BodybyFisher]

check this for your coils

http://caddyinfo.ipbhost.com/index.php?showtopic=16967

[Cadillac Jim]

The 1997 model year isn't known for crankshaft sensor failures but the symptom makes good case for a look at them. The fuel pump can cause these symptoms, as can water in the gas and it's twin sister, a clogged fuel filter.

[adallak]

The 1997 model year isn't known for crankshaft sensor failures but the symptom makes good case for a look at them. The fuel pump can cause these symptoms, as can water in the gas and it's twin sister, a clogged fuel filter.

True, those are 2000 Northstar that came with bad sensors, but never hurts to check them out. As for fuel filters, in seven years on this and other boards I cannot recall any case when changing a fuel filter made a difference or solved a problem. Looks like the gas tanks are much better nowadays.

[Cadillac Jim]

I was thinking of water in the gas from a filling station that ran its storage tank nearly empty, and there was accumulated condensation at the bottom of the storage tank. Every serious case of water-in-the-gas I've heard of is traceable to just that cause. It can happen to anyone, particularly if you buy gas in a sleepy out-of-the-way general store or some such.